There is no "good enough" when it comes to child safety. It's either safe, or it's not. This is not.

I have a third alternative, don't transport the child in this vehicle. Children have no say in these situations and it's our jobs as adults to make sure they are safe.Above all else (even though safety is #1), this is illegal. Possibly even child endangerment.It was not tested by either car seat companies or the car company, therefore will void any warranty on the car seat.

I'm not sure if this is legal or not but I do know that it is highly dangerous. Using a carabiner is dangerous because it is not what came with the original car seat and was not tested by manufacture for use with this car seat, thus so making the warranty on the seat VOID from the manufacturer's warranty. It is also in the manual that no aftermarket products are to be used with car seats and that they are not to be altered in any way. In addition, the hooks that have been put into the car itself have not been crashed tested for use with car seats making this a very dangerous thing to suggest. Any CPST (Child Passenger Safety Technician aka people trained in car seats, boosters, and child passenger safety in general) will tell you that this is dangerous and not safe for any child.Also if...

I'm not sure if this is legal or not but I do know that it is highly dangerous. Using a carabiner is dangerous because it is not what came with the original car seat and was not tested by manufacture for use with this car seat, thus so making the warranty on the seat VOID from the manufacturer's warranty. It is also in the manual that no aftermarket products are to be used with car seats and that they are not to be altered in any way. In addition, the hooks that have been put into the car itself have not been crashed tested for use with car seats making this a very dangerous thing to suggest. Any CPST (Child Passenger Safety Technician aka people trained in car seats, boosters, and child passenger safety in general) will tell you that this is dangerous and not safe for any child.Also if this car seat is still being used (I know this post was from a few years ago) I would check the expiration date. Car seats are illegal to use after they expire and can be dangerous as well due to aging of the fabric and metals in the seat. Thank you for taking your time to read this and I suggest you look a bit further in to how safe this actually is. You can find a local CPST and meet up with them for free using this website. It responds better to simple searches so try only your zip code, or your city and state.https://ssl06.cyzap.net/dzapps/dbzap.bin/apps/assess/webmembers/tool?pToolCode=TAB9&pCategory1=TAB9_CERTSEARCH&Webid=SAFEKIDSCERTSQL